Table 2.

Systematization of the analysis of the co-design factors and its outcomes for the study area

Co-design factor	Analysed aspects	Determining aspect of design (implications)	Outcomes
Urban landscape configuration	• Analysis of public space • Existing green networks • Constraints due traffic • Current use and functionality of spaces	• Potential location for implementation NBS • Available areas • Type of NBS • Construction and safety regulations and standards	Location of placement and sizing: Implementation only in public spaces conserving actual areas i.e. green verges of streets and green area in riparian zone
Dry-weather runoff drainage	• Runoff pathway • Collection and transport of runoff • Identification of greywater discharges to gutters	• Optimal adaptation to the existing drainage configuration • Construction and safety regulations and standards	Adapted design: Adaptation of technical hydraulic features to profit from existing infrastructure i.e. inlet and outlets of prototypes
Social acceptance	• Perception of NBS in urban areas • Perception of greywater as a runoff • Willingness to change existing public space • Landscape design features • Type of vegetation preferred	• Type of NBS accepted • Location of NBS on private or public land • Type of vegetation • Landscape design	Type of NBS: Limited to subsurface filtration systems due to bad perception of surface flow (mosquito breeding & odours)